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Apple Mail Cannot Connect to iRedMail? Here’s the Fix

Apple Mail Cannot Connect to iRedMail? Here’s the Fix

May 22, 2026 | Advanced Linux Scripting, Learn Linux in practical way

Apple Mail throwing “Unable to verify account name or password” errors with your iRedMail server? Learn the correct settings for IMAP, SMTP, SSL, and authentication that actually work. Suggested Featured Image Prompt: You’ve followed every tutorial....
Firewalld Says Ports Are Open But Connections Fail: The SMTP Port Mystery

Firewalld Says Ports Are Open But Connections Fail: The SMTP Port Mystery

May 22, 2026 | Uncategorized

You’ve opened ports 465 and 587 in firewalld, but connections still fail. Learn why rich rules, zones, and service definitions matter. Fix your email server firewall once and for all. You’ve run the command. You’ve double-checked it twice: sudo...
Remove ‘Untrusted Certificate’ Errors in Apple Mail, Outlook, and Thunderbird for iRedMail

Remove ‘Untrusted Certificate’ Errors in Apple Mail, Outlook, and Thunderbird for iRedMail

May 22, 2026 | Advanced Linux Scripting, Learn Linux in practical way

Tired of “untrusted certificate” warnings in your email client? Replace iRedMail’s self-signed SSL certificates with free Let’s Encrypt certificates. Step-by-step guide for Rocky Linux, Ubuntu, and more. You’ve just set up iRedMail and...
Postfix SASL Authentication Failed: Fixing ‘No SASL authentication mechanisms’ in iRedMail

Postfix SASL Authentication Failed: Fixing ‘No SASL authentication mechanisms’ in iRedMail

May 22, 2026 | Advanced Linux Scripting, Learn Linux in practical way

You’ve just set up iRedMail, configured your domains, and created email accounts. Everything seems perfect until you try to send an email from your desktop client. Instead of a sent confirmation, you’re staring at an error message in your mail logs:...
How to Set Up Let’s Encrypt SSL for iRedMail on Rocky Linux 10.1, RHEL, CentOS, Fedora, and Ubuntu

How to Set Up Let’s Encrypt SSL for iRedMail on Rocky Linux 10.1, RHEL, CentOS, Fedora, and Ubuntu

May 22, 2026 | Advanced Linux Scripting, Learn Linux in practical way

Introduction iRedMail is a powerful open-source mail server solution that comes with self-signed SSL certificates by default. While self-signed certificates work, they trigger security warnings in email clients like Apple Mail, Outlook, and Thunderbird. This tutorial...
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News & Updates

  • Fixing the “SASL: Connect to Dovecot Auth Socket Failed” Error
  • Mail Server Hardening – Securing iRedMail Against Modern Attacks
  • Securing Your Red Hat, CentOS, Rocky Linux 10.2 KVM Host Server – A Complete Hardening Guide
  • SELinux: Fix ‘Permission denied’ for swtpm (libvirt TPM Emulator) on Rocky Linux 10
  • Postfix Postscreen Error: How to Fix ‘No such file or directory’ for LMDB Maps

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